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- # Copyright (C) 2014-2022 Free Software Foundation, Inc.
- #
- # Copying and distribution of this file, with or without modification,
- # are permitted in any medium without royalty provided the copyright
- # notice and this notice are preserved.
- # In microcomputer (MC) mode, the vectors are mapped into the on-chip ROM,
- # otherwise in microprocessor (MP) mode the vectors are mapped to address 0
- # on the external bus. In MC mode, the on-chip ROM contains a bootloader program
- # that loads the internal RAM from the serial port or external ROM.
- #
- # Common configurations:
- # 1. MC mode, no external memory (serial boot).
- # 2. MC mode, external RAM (serial boot).
- # 3. MC mode, external ROM.
- # 4. MC mode, external ROM, external RAM.
- # 5. MP mode, external ROM.
- # 6. MP mode, external ROM, external RAM.
- # 7. MP mode, external RAM (dual-port with hosting CPU or external debugger).
- #
- # Config TEXT DATA/BSS
- # 1. INT_RAM INT_RAM (mcmode,onchip)
- # 2. EXT_RAM EXT_RAM (mcmode,extram)
- # 3. INT_RAM INT_RAM (mcmode,onchip)
- # 4. EXT_RAM EXT_RAM (mcmode,extram)
- # 5. EXT_ROM INT_RAM (mpmode,onchip,extrom)
- # 6. EXT_ROM EXT_RAM (mpmode,extram,extrom)
- # 7. EXT_RAM EXT_RAM (mpmode,extram)
- #
- # In MC mode, TEXT and DATA are copied into RAM by the bootloader.
- #
- # In MP mode with external ROM, DATA needs to be copied into RAM at boot time.
- #
- # If there is external RAM it is better to use that and reserve the internal RAM
- # for data buffers. However, the address of the external RAM needs to be specified.
- #
- # This emulation assumes config 7.
- case $OUTPUT_ARCH in
- tic3x) OUTPUT_ARCHNAME="TMS320C3x" ;;
- tic4x) OUTPUT_ARCHNAME="TMS320C4x" ;;
- esac
- case $ONCHIP in
- yes) RAM=RAM;
- STACK_SIZE_DEFAULT=128;
- HEAP_SIZE_DEFAULT=0;
- ;;
- *) RAM=EXT0;
- STACK_SIZE_DEFAULT=0x1000;
- HEAP_SIZE_DEFAULT=0x4000;
- ;;
- esac
- TEXT_MEMORY=$RAM;
- DATA_MEMORY=$RAM;
- MEMORY_DEF="
- /* C30 memory space. */
- MEMORY
- {
- EXT0 : org = 0x0000000, len = 0x800000 /* External address bus. */
- XBUS : org = 0x0800000, len = 0x002000 /* Expansion bus. */
- IOBUS : org = 0x0804000, len = 0x002000 /* I/O BUS. */
- RAM0 : org = 0x0809800, len = 0x000400 /* Internal RAM block 0. */
- RAM1 : org = 0x0809a00, len = 0x000400 /* Internal RAM block 1. */
- RAM : org = 0x0809800, len = 0x000800 /* Internal RAM. */
- EXT1 : org = 0x080a000, len = 0x7f6000 /* External address bus. */
- }
- "
- test -z "$ENTRY" && ENTRY=_start
- cat <<EOF
- ${RELOCATING+/* Linker script for $OUTPUT_ARCHNAME executable. */}
- ${RELOCATING-/* Linker script for $OUTPUT_ARCHNAME object file (ld -r). */}
- /* Copyright (C) 2014-2022 Free Software Foundation, Inc.
- Copying and distribution of this script, with or without modification,
- are permitted in any medium without royalty provided the copyright
- notice and this notice are preserved. */
- OUTPUT_FORMAT("${OUTPUT_FORMAT}")
- OUTPUT_ARCH("${OUTPUT_ARCH}")
- ${LIB_SEARCH_DIRS}
- ${RELOCATING+ENTRY (${ENTRY})}
- ${RELOCATING+ __HEAP_SIZE = DEFINED(__HEAP_SIZE) ? __HEAP_SIZE : ${HEAP_SIZE_DEFAULT};}
- ${RELOCATING+ __STACK_SIZE = DEFINED(__STACK_SIZE) ? __STACK_SIZE : ${STACK_SIZE_DEFAULT};}
- ${RELOCATING+${MEMORY_DEF}}
- /* In the small memory model the .data and .bss sections must be contiguous
- when loaded and fit within the same page. The DP register is loaded
- with the page address. */
- SECTIONS
- {
- /* Reset, interrupt, and trap vectors. */
- .vectors ${RELOCATING+ 0} : {
- *(.vectors)
- } ${RELOCATING+ > ${TEXT_MEMORY}}
- /* Constants. */
- .const : {
- *(.const)
- } ${RELOCATING+ > ${TEXT_MEMORY}}
- /* Program code. */
- .text : {
- ${RELOCATING+ __text = .;}
- ${RELOCATING+ KEEP (*(SORT_NONE(.init)))}
- *(.text)
- ${CONSTRUCTING+ ___CTOR_LIST__ = .;}
- ${CONSTRUCTING+ LONG(___CTOR_END__ - ___CTOR_LIST__ - 2)}
- ${CONSTRUCTING+ *(.ctors)}
- ${CONSTRUCTING+ LONG(0);}
- ${CONSTRUCTING+ ___CTOR_END__ = .;}
- ${CONSTRUCTING+ ___DTOR_LIST__ = .;}
- ${CONSTRUCTING+ LONG(___DTOR_END__ - ___DTOR_LIST__ - 2)}
- ${CONSTRUCTING+ *(.dtors)}
- ${CONSTRUCTING+ LONG(0)}
- ${CONSTRUCTING+ ___DTOR_END__ = .;}
- ${RELOCATING+ KEEP (*(SORT_NONE(.fini)))}
- ${RELOCATING+ __etext = .;}
- } ${RELOCATING+ > ${TEXT_MEMORY}}
- /* Global initialised variables. */
- .data :
- {
- ${RELOCATING+ __data = .;}
- *(.data)
- ${RELOCATING+ __edata = .;}
- } ${RELOCATING+ > ${DATA_MEMORY}}
- /* Global uninitialised variables. */
- .bss : {
- ${RELOCATING+ __bss = .;}
- *(.bss)
- *(COMMON)
- ${RELOCATING+ __end = .;}
- } ${RELOCATING+ > ${DATA_MEMORY}}
- /* Heap. */
- .heap :
- {
- ${RELOCATING+ __heap = .;}
- ${RELOCATING+ . += __HEAP_SIZE};
- } ${RELOCATING+ > ${DATA_MEMORY}}
- /* Stack (grows upward). */
- .stack :
- {
- ${RELOCATING+ __stack = .;}
- *(.stack)
- ${RELOCATING+ . = . + __STACK_SIZE};
- } ${RELOCATING+ > ${DATA_MEMORY}}
- .stab 0 ${RELOCATING+(NOLOAD)} :
- {
- [ .stab ]
- }
- .stabstr 0 ${RELOCATING+(NOLOAD)} :
- {
- [ .stabstr ]
- }
- }
- EOF
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